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Finding the Fourth Proportional to 15,914.90, 22,251.70 and 15,914.90

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Solution

The fourth proportional to 15,914.90, 22,251.70 and 15,914.90 is: 22,251.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,914.90 : 22,251.70 = 15,914.90 : x
  2. Step 2: Convert to fraction form
    15,914.90/22,251.70 = 15,914.90/x
  3. Step 3: Cross multiply
    15,914.90x = 22,251.70 × 15,914.90
  4. Step 4: Simplify right side
    15,914.90x = 354,133,580.33
  5. Step 5: Solve for x
    x = 354,133,580.33/15,914.90
  6. Step 6: Final answer
    x = 22,251.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.